EVO All Evo Model Discussion

Cam timing

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Old Jul 9, 2019 | 11:25 AM
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Default Cam timing

Any chance I could have been off 1 tooth and still pulled 130tq on the dyno. 113 woods 9B 45mik fatcat
I was having a lot of reversion and some popping. As well as no power until 3000 rpm. Almost like an engine brake. I pulled the woods cam out and it looked like I was 1 tooth off
 
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Old Jul 9, 2019 | 04:37 PM
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I doubt it.. A compression test will usually indicate the possibility of a cam being off a tooth by a 30 psi difference in ccp. Don't think you would hit those numbers if it was.. I ran the 9B for a while and did not like the low end... 3k and under..

Post up a dyno run sheet....
 

Last edited by 98hotrodfatboy; Jul 9, 2019 at 04:39 PM.
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Old Jul 9, 2019 | 09:32 PM
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Originally Posted by 98hotrodfatboy
I doubt it.. A compression test will usually indicate the possibility of a cam being off a tooth by a 30 psi difference in ccp. Don't think you would hit those numbers if it was.. I ran the 9B for a while and did not like the low end... 3k and under..

Post up a dyno run sheet....
I will when I get home
 
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Old Jul 9, 2019 | 09:33 PM
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My ccp was 225 each cyl.
 
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Old Jul 9, 2019 | 09:35 PM
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Running some healthy compression there, be pushing 11.7-1 or a tad better.
 
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Old Jul 9, 2019 | 10:25 PM
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That damn 9b pushed me up I was.11:1 with the 631
 
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Old Jul 10, 2019 | 08:45 PM
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Originally Posted by brad75raiders
That damn 9b pushed me up I was.11:1 with the 631
Did the dyno run show any lean condition below 3000, at the ccp your talking I can see the big torque but can also see you needing to feed it down low because she's not bleeding off very much.
 
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Old Jul 10, 2019 | 09:31 PM
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Originally Posted by TwiZted Biker
Running some healthy compression there, be pushing 11.7-1 or a tad better.
a tad higher for sure for a 50* ivc.. 11.9-12.0. must have had a hell of a time tuning it..
 
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Old Jul 10, 2019 | 10:07 PM
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Originally Posted by 98hotrodfatboy
a tad higher for sure for a 50* ivc.. 11.9-12.0. must have had a hell of a time tuning it..
My shovel runs 215 psi cold, comes in at 11.7-1, I'm 245lbs and can stand on my kicker Even with dual plugs tuning is art form getting that high, I still tweak timing and play with plug gaps when the mood strikes.
 
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Old Jul 11, 2019 | 07:55 PM
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To be honest I didnt tune it after the 9B. They Dyno guy at dream rides dialed the mik45 in at that time. They didnt say it was a bitch to tune
They called and told.me that the motor was ripping through my silver spring clutch ( rivera pro) and I needed a gold...
 
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